:root{--primary:#3b82f6;--primary-dark:#2563eb;--accent:#8b5cf6;--bg:#f8fafc;--surface:#fff;--border:#e2e8f0;--text:#0f172a;--text-muted:#64748b;--success:#10b981;--danger:#ef4444;--warning:#f59e0b;--radius:12px;--shadow:0 1px 3px rgba(0,0,0,.08),0 4px 12px rgba(0,0,0,.05);--shadow-lg:0 4px 16px rgba(0,0,0,.1),0 8px 32px rgba(0,0,0,.08);--transition:all 0.2s cubic-bezier(0.4,0,0.2,1)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:PingFang SC,Microsoft YaHei,-apple-system,BlinkMacSystemFont,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased}.navbar{background:var(--surface);border-bottom:1px solid var(--border);position:-webkit-sticky;position:sticky;top:0;z-index:100;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:hsla(0,0%,100%,.95)}.navbar-inner{max-width:1100px;margin:0 auto;padding:0 24px;height:64px;justify-content:space-between;gap:24px}.navbar-inner,.navbar-logo{display:flex;align-items:center}.navbar-logo{font-size:20px;font-weight:700;color:var(--primary);text-decoration:none;gap:8px}.navbar-logo span{color:var(--text)}.navbar-nav{display:flex;align-items:center;gap:8px;list-style:none}.navbar-nav a{color:var(--text-muted);text-decoration:none;padding:8px 14px;border-radius:8px;font-size:14px;font-weight:500;transition:var(--transition)}.navbar-nav a:hover{background:var(--bg);color:var(--text)}.navbar-nav a.active{color:var(--primary);background:#eff6ff}.navbar-actions{display:flex;align-items:center;gap:10px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:10px 20px;border-radius:var(--radius);font-size:14px;font-weight:600;border:none;cursor:pointer;text-decoration:none;transition:var(--transition);white-space:nowrap}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:0 4px 12px rgba(59,130,246,.35)}.btn-outline{background:transparent;color:var(--primary);border:1.5px solid var(--primary)}.btn-outline:hover{background:#eff6ff}.btn-danger{background:var(--danger);color:#fff}.btn-danger:hover{background:#dc2626}.btn-ghost{background:transparent;color:var(--text-muted)}.btn-ghost:hover{background:var(--bg);color:var(--text)}.btn-sm{padding:6px 14px;font-size:13px;border-radius:8px}.btn-lg{padding:14px 28px;font-size:15px}.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}.card{background:var(--surface);border-radius:var(--radius);border:1px solid var(--border);box-shadow:var(--shadow);overflow:hidden}.card-body{padding:24px}.container{max-width:1100px;margin:0 auto;padding:0 24px}.section{padding:48px 0}.section-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:32px}.section-title{font-size:24px;font-weight:700;color:var(--text)}.badge{display:inline-flex;align-items:center;padding:4px 10px;border-radius:100px;font-size:12px;font-weight:600}.badge-primary{background:#eff6ff;color:var(--primary)}.badge-success{background:#d1fae5;color:#059669}.badge-warning{background:#fef3c7;color:#d97706}.product-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));grid-gap:20px;gap:20px}.product-card{background:var(--surface);border-radius:var(--radius);border:1px solid var(--border);overflow:hidden;transition:var(--transition);cursor:pointer}.product-card:hover{border-color:var(--primary);box-shadow:var(--shadow-lg);transform:translateY(-3px)}.product-img{width:100%;height:200px;object-fit:cover;background:linear-gradient(135deg,#eff6ff,#f5f3ff);display:flex;align-items:center;justify-content:center;font-size:48px}.product-info{padding:16px}.product-name{font-size:15px;font-weight:600;margin-bottom:6px;color:var(--text)}.product-category{font-size:12px;color:var(--text-muted);margin-bottom:10px}.product-price-row{display:flex;align-items:center;justify-content:space-between}.product-price{font-size:20px;font-weight:700;color:var(--danger)}.product-price small{font-size:13px;font-weight:400;text-decoration:line-through;color:var(--text-muted);margin-left:4px}.add-cart-btn{width:36px;height:36px;border-radius:50%;background:var(--primary);color:#fff;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:18px;transition:var(--transition)}.add-cart-btn:hover{background:var(--primary-dark);transform:scale(1.1)}.form-group{margin-bottom:20px}.form-label{display:block;font-size:14px;font-weight:500;color:var(--text);margin-bottom:8px}.form-input{width:100%;padding:12px 16px;border:1.5px solid var(--border);border-radius:10px;font-size:15px;color:var(--text);background:var(--surface);transition:var(--transition);outline:none}.form-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(59,130,246,.12)}.form-input::placeholder{color:#94a3b8}.form-error{color:var(--danger);font-size:13px;margin-top:6px}.auth-container{min-height:calc(100vh - 64px);display:flex;align-items:center;justify-content:center;padding:40px 24px}.auth-card{width:100%;max-width:420px;background:var(--surface);border-radius:16px;box-shadow:var(--shadow-lg);padding:40px}.auth-title{font-size:24px;font-weight:700;text-align:center;margin-bottom:8px}.auth-subtitle{margin-bottom:32px}.auth-footer,.auth-subtitle{font-size:14px;color:var(--text-muted);text-align:center}.auth-footer{margin-top:24px}.auth-footer a{color:var(--primary);text-decoration:none;font-weight:600}.cart-layout{display:grid;grid-template-columns:1fr 340px;grid-gap:24px;gap:24px;align-items:start}.cart-items{display:flex;flex-direction:column;gap:16px}.cart-item{gap:16px;padding:16px;background:var(--surface);border-radius:var(--radius);border:1px solid var(--border)}.cart-item,.cart-item-img{display:flex;align-items:center}.cart-item-img{width:80px;height:80px;border-radius:10px;object-fit:cover;background:linear-gradient(135deg,#eff6ff,#f5f3ff);justify-content:center;font-size:32px;flex-shrink:0}.cart-item-info{flex:1 1;min-width:0}.cart-item-name{font-size:15px;font-weight:600;margin-bottom:4px}.cart-item-price{font-size:14px;color:var(--danger);font-weight:600}.cart-item-controls{gap:8px}.cart-item-controls,.qty-btn{display:flex;align-items:center}.qty-btn{width:32px;height:32px;border:1.5px solid var(--border);border-radius:8px;background:#fff;cursor:pointer;font-size:16px;justify-content:center;transition:var(--transition)}.qty-btn:hover{border-color:var(--primary);color:var(--primary)}.qty-num{font-size:15px;font-weight:600;min-width:24px;text-align:center}.cart-summary{background:var(--surface);border-radius:var(--radius);border:1px solid var(--border);padding:24px;position:-webkit-sticky;position:sticky;top:88px}.cart-summary-row{display:flex;justify-content:space-between;align-items:center;padding:8px 0}.cart-summary-row.total{border-top:1px solid var(--border);margin-top:8px;padding-top:16px;font-size:18px;font-weight:700}.cart-summary-row.total .price{color:var(--danger);font-size:22px}.checkout-card{background:var(--surface);border-radius:var(--radius);border:1px solid var(--border);padding:24px;margin-bottom:16px}.checkout-section-title{font-size:16px;font-weight:600;margin-bottom:16px;padding-bottom:12px;border-bottom:1px solid var(--border)}.order-list{display:flex;flex-direction:column;gap:16px}.order-card{background:var(--surface);border-radius:var(--radius);border:1px solid var(--border);padding:20px}.order-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.order-no{font-size:13px;color:var(--text-muted);font-family:monospace}.order-items{display:flex;flex-direction:column;gap:8px}.order-item{font-size:14px}.order-footer,.order-item{display:flex;justify-content:space-between}.order-footer{align-items:center;margin-top:12px;padding-top:12px;border-top:1px solid var(--border)}.toast-container{position:fixed;bottom:24px;right:24px;z-index:9999;display:flex;flex-direction:column;gap:10px}.toast{padding:14px 20px;border-radius:10px;font-size:14px;font-weight:500;box-shadow:var(--shadow-lg);animation:toastIn .3s cubic-bezier(.4,0,.2,1);display:flex;align-items:center;gap:8px}.toast-success{background:#ecfdf5;color:#059669;border:1px solid #a7f3d0}.toast-error{background:#fef2f2;color:#dc2626;border:1px solid #fecaca}.toast-info{background:#eff6ff;color:var(--primary);border:1px solid #bfdbfe}@keyframes toastIn{0%{opacity:0;transform:translateY(20px) scale(.95)}to{opacity:1;transform:translateY(0) scale(1)}}.hero{background:linear-gradient(135deg,#eff6ff,#f5f3ff 50%,#fdf2f8);padding:80px 0;text-align:center}.hero-title{font-size:48px;font-weight:800;margin-bottom:16px;background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent}.hero-subtitle{font-size:18px;color:var(--text-muted);margin-bottom:32px;max-width:560px;margin-left:auto;margin-right:auto}.hero-actions{display:flex;gap:12px;justify-content:center}.empty-state{text-align:center;padding:80px 24px}.empty-icon{font-size:64px;margin-bottom:16px}.empty-title{font-size:20px;font-weight:600;margin-bottom:8px}.empty-desc{color:var(--text-muted);margin-bottom:24px}.pay-success{text-align:center;padding:80px 24px}.pay-success-icon{font-size:80px;margin-bottom:24px}.pay-success-title{font-size:28px;font-weight:700;margin-bottom:12px}.pay-success-desc{color:var(--text-muted);margin-bottom:32px}@media (max-width:768px){.hero-title{font-size:32px}.cart-layout{grid-template-columns:1fr}.navbar-nav{display:none}.product-grid{grid-template-columns:repeat(2,1fr)}}.text-center{text-align:center}.text-muted{color:var(--text-muted)}.mt-4{margin-top:16px}.mt-8{margin-top:32px}.mb-4{margin-bottom:16px}.mb-8{margin-bottom:32px}.flex{display:flex}.flex-center{display:flex;align-items:center;justify-content:center}.gap-2{gap:8px}.gap-4{gap:16px}.w-full{width:100%}